happyphysics.com Physics Lecture Physics Lecture Resources Resources Prof. Mineesh Gulati Head-Physics Wing Happy Model Hr. Sec. School, Udhampur, J&K Website: happyphysics.com
Happyphysics.com Physics Lecture Resources Prof. Mineesh Gulati Head-Physics Wing Happy Model Hr. Sec. School, Udhampur, J&K Website: happyphysics.com.
Dec 13, 2015
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happyphysics.com
Physics Lecture Physics Lecture ResourcesResources
Prof. Mineesh GulatiHead-Physics Wing
Happy Model Hr. Sec. School, Udhampur, J&K
Website: happyphysics.com
Ch 23 Electric Ch 23 Electric PotentialPotential
© 2005 Pearson Education
23.1 Electric Potential Energy23.1 Electric Potential Energy
UUUUUW abbaba )(
work done by a conservative force
© 2005 Pearson Education
0a bW q Ed
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
02
0
02
0
02
0
1
4
1
4
1cos cos
4
b b
a a
b b
a a
r
r r
a b rr r
r r
a b r r
qqF
r
qqW F dr dr
r
qqW F dl dl
r
© 2005 Pearson Education
r
qqU 0
04
1
electric potential energy of two point charges
© 2005 Pearson Education
© 2005 Pearson Education
i i
i
r
r
q
r
q
r
qqU
0
0
3
3
2
2
1
1
0
0
44
Point charge and collection of charges
© 2005 Pearson Education
23.2 Electric Potential23.2 Electric Potential
© 2005 Pearson Education
r
q
q
UV
00 4
1
Potential due to a point charge
i i
i
r
q
q
UV
00 4
1
Potential due to a collection of point charges
r
dqV
04
1
Potential due to a continuous distribution of charge
© 2005 Pearson Education
potential difference as an integral of
© 2005 Pearson Education
b
a
b
aba dlEdVV coslE
23.3 Calculating Electric Potential23.3 Calculating Electric Potential
© 2005 Pearson Education
Example 23.8 A solid conducting sphere of radius R has a total charge q. Find potential everywhere, both outside and inside the sphere.
23.4 Equipotential Surfaces23.4 Equipotential Surfaces
© 2005 Pearson Education
© 2005 Pearson Education
Equipotential surface
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
23.5 Potential Gradient23.5 Potential Gradient
x
VEx
y
VE y
z
VE z
components of in terms of
z
V
y
V
x
VkjiE ˆˆˆ
in terms of E
V
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
© 2005 Pearson Education
Two equivalent sets of units for electric-field magnitude are volts per meter (V/m) and newtons per coulomb (N/C). One volt is one joule per coulomb (1V-1 J/C). A useful unit of energy is the electron volt (eV), which is the energy corresponding to a particle with a charge equal to that of an electron moving through a potential difference of one volt. The conversion factor is 1 eV=1.602power-19J
© 2005 Pearson Education
ENDEND
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